Headphone



FIG. 1 is a front elevational view of a headphone showing our new design, wherein lines VI—VI and VI′—VI′ are shown;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof,

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a partially enlarged view thereof, taken between the lines VII—VII and VII′—VII′ shown in FIG. 1;

FIG. 7 is a perspective view thereof;

FIG. 8 is a reference perspective view thereof, showing a using condition; and

FIG. 9 is a reference perspective view thereof, showing another using condition; and,

FIG. 10 is a reference right side elevational view thereof.

The broken lines showing of the environment are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a headphone, as shown and described. 